28 sr api developer jobs at 21 companies in Florence, CO
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Application Developer - Senior
Colorado Springs or Reston
$60k-$180k/yr HybridFull Time
7+ YOE7+ years software development, 5+ years ServiceNow, Java knowledge, 4+ years development lead experience, integration/API development, IT-II/Tier 3/NACLC/ANACI eligibility or current Tier 3 investigation; relevant ServiceNow and agile certifications preferred.
ServiceNow, Java
1d
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Principal Software Engineer
Colorado Springs or Dayton or Herndon
$175k-$200k/yr HybridFull Time
Software development experience with Unix/Linux, microservices, messaging, REST APIs, Agile/DevOps, Python, Java, JavaScript/React, and Cucumber; ability to obtain and maintain Top Secret clearance.
Unix, Linux, RabbitMQ, REST APIs, Agile, DevOps, Python, Java, JavaScript, React, Cucumber, CI/CD, GitHub, GitLab, Jira, Sphinx, NASA GMAT
1mo
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Senior Software Engineer
Colorado Springs or Boston
HybridFull Time
5+ YOEUS citizen with active Secret clearance, BS in a STEM field, 5+ years software development experience in scientific/high-performance computing, proficiency with TypeScript/React and Julia or other high-performance languages, parallelism and REST API experience.
TypeScript, React, Julia, C++, Rust, Fortran, Python, NumPy, Numba, Cython, DifferentialEquations.jl, SatelliteToolbox.jl, PackageCompiler.jl, ONNX.jl, ONNX Runtime, CesiumJS, Resium, CZML, Electron, electron-builder, HTTP.jl, GitHub Actions, Recharts, Plotly.js, NSIS, AppImage
1mo
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Software Engineer Senior - Secret Clearence
Colorado Springs, Colorado, United States
$93k-$186k/yr OnsiteFull Time
Active Final Secret clearance and US passport, 8140-compliant certification (e.g., Security+), proficiency in Python/Java/Bash/Powershell, CI/CD (GitLab, Jenkins), Git, REST API, DevOps/automation, and strong communication skills.
GitLab, Jenkins, GitLab CI, Git, Python, Java, Bash, Powershell, REST API, Ansible, Terraform, CloudFormation, VMware Aria, Docker, Kubernetes, AWS, Azure, GCP, JavaScript, React, TypeScript, HTML, CSS, Microsoft PowerPoint, Microsoft Visio
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Back End Software Developer
Colorado Springs, Colorado, United States
$101k-$175k/yr HybridFull Time
5+ YOEBachelor's in CS/CE or related, 5+ years backend development, proficiency in Python/Java/Node.js, RESTful API design, experience with PostgreSQL/MongoDB, familiarity with Django/Flask/Spring and Git, ability to work with data-intensive systems.
Python, Java, Node.js, PostgreSQL, MongoDB, Django, Flask, Spring Framework, Git, Amazon Web Services (AWS), Microsoft Azure, Docker
1mo
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Back End Software Developer - Clearance Required
Colorado Springs, Colorado, United States
$101k-$175k/yr HybridFull Time
5+ YOEBachelor's in CS or related,5–10 years backend development,proficiency in Python/Java/Node.js,REST APIs,relational/NoSQL databases,Git,TS/SCI clearance eligibility.
RAPTR, Python, Java, Node.js, PostgreSQL, MongoDB, Django, Flask, Spring Framework, Git, Amazon Web Services, Microsoft Azure, Docker
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Senior Engineer I-Software
Colorado Springs, Colorado, United States
$70k-$105k/yr OnsiteFull Time
5+ YOEBachelor's or master's in computer science or related, 5+ years software development, experience with .NET, SQL, enterprise apps, technical leadership and mentoring, ability to work onsite in Colorado Springs and occasional off-hour global meetings.
Microsoft .NET, Visual Studio, C#, ASP.NET, Visual Basic, MVC, Web API, WCF, JavaScript, jQuery, HTML5, CSS3, SQL, Oracle, Microsoft SQL Server, SSRS, SSIS, Microsoft O365, Team Foundation Server, ETL
3d
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Full Stack Software Engineer
Colorado Springs or Beltsville
$125k-$145k/yr RemoteFull Time
5+ YOEBachelor's degree in a technical discipline plus 5+ years of technical experience, or equivalent experience; US citizenship, clearance eligibility, full-stack development, APIs, databases, Git, CI/CD, and Agile experience required.
Mattermost, React, Angular, Vue, JavaScript, Go, Python, Java, C#, MS SQL, PostgreSQL, MySQL, Scrum, Kanban, Lean, Scaled Agile Framework, GitOps, Git, GitLab, GitHub, Jenkins, Slack, Microsoft Teams, Platform One, Docker, Amazon Web Services (AWS), VPC, EC2, S3, Lambda, Kubernetes, Keycloak, Appgate, Okta, Bash, PowerShell
3mo
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Software Engineer II - TS w/ SCI eligibility
Colorado Springs or San Diego or Norfolk
$104k-$181k/yr OnsiteFull Time
5+ YOETop Secret clearance with SCI eligibility; 5+ years software development; backend services and APIs; Java, TypeScript/JavaScript; Angular; PostgreSQL; containerized apps; Git/Kibana; strong communication and teamwork.
Java, TypeScript, JavaScript, Angular, PostgreSQL, Docker, Kubernetes, Kafka, Git, Bitbucket
2mo
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Senior Software Engineer
Colorado Springs, Colorado, United States
$120k-$185k/yr OnsiteFull Time
8+ YOEU.S. citizen with active TS/SCI clearance, Bachelor's in CS/SE/IS/Engineering, 8+ years software engineering experience, RESTful APIs, microservices, cloud-native, Java/Python/C#/JavaScript, Agile/DevSecOps experience.
Java, Python, C#, JavaScript, Kubernetes, RESTful APIs
2mo
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Senior Software Engineer
Colorado Springs, Colorado, United States
OnsiteFull Time
5+ YOESenior software engineer with 5+ years in aerospace/defense, STK experience, TS/SCI eligibility, strong Python/Flask, React, API integration, Docker, cloud.
STK, STK Engine, STK Components, Cesium, Python, Flask, React, REST, Git, Docker, Cloud, MBSE, Digital Thread
1mo
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Advanced Full Stack Developer
Centennial or Tucson or Colorado Springs
$133k-$178k/yr OnsiteFull Time
8+ YOEDegree in Computer Engineering or Computer Science; 8+ years full-stack experience; proficiency in C++, Python on Linux, JavaScript/CSS/HTML, RESTful APIs, SQL and relational data modeling; experience with DevOps/Cloud (GitLab, CI/CD, Docker, Kubernetes, pip); ability to obtain/hold TS/SCI and U.S. citizenship required.
C++, Python, Linux, JavaScript, CSS, HTML, Vue, React, Angular, RESTful APIs, SQL, GitLab, CI/CD, Docker, Kubernetes, pip
1mo
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Senior Java Developer
Denver or Colorado Springs
RemoteFull Time
8+ YOEU.S. citizen with active Secret clearance and 8+ years Java development experience; skilled with Spring Boot, Hibernate, Struts2/J2EE, cloud (AWS/Azure), APIs, and CI/CD.
Java, Spring Boot, Hibernate, Struts 2, J2EE, Oracle, SQL Server, JUnit, SAML, AWS, Azure, CI/CD, Login.gov, SAFe
2mo
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Senior Software Engineer
Colorado Springs, Colorado, United States
$194k-$262k/yr OnsiteFull Time
10+ YOESeasoned software engineer lead with architecture, mentoring, and delivery across complex, mission-critical systems.
C++, Python, Git, Linux, APIs, Distributed systems, Docker, Kubernetes, Jenkins, GitLab
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Senior Backend Engineer
Colorado Springs, Colorado, United States
$160k-$185k/yr HybridFull Time
5+ YOE5+ years software engineering experience; strong Python, FastAPI, Postgres, AWS, Docker, Kubernetes, Terraform; cloud architecture, API/backend development, security focus, mentorship and customer integration skills.
Python, FastAPI, Postgres, AWS, Docker, Kubernetes, Terraform
2w
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Infoblox Engineer - TS/SCI with Polygraph
Annapolis Junction or Sterling or Colorado Springs
$157k-$213k/yr OnsiteFull Time
15+ YOEActive TS/SCI with Polygraph, 15+ years IT experience, DoD 8570 IAT Level II, CDCA, DNS/DHCP/IPAM expertise, Python and API experience, bachelor's in IT or 12+ years relevant experience.
Infoblox, DNS, DHCP, IPAM, BIND, NTP, Python, APIs
2w
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Infoblox Engineer - TS/SCI with Polygraph
Annapolis Junction or Sterling or Colorado Springs
$157k-$213k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
15+ YOEActive TS/SCI with polygraph, meet DoD 8570 IAT Level II, CDCA certification, 15+ years related experience, DNS/DHCP/IPAM expertise, Python and API experience, strong troubleshooting and communication skills.
Infoblox, BIND, NTP, Python, APIs
2mo
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AI/ML Engineer - ELSYS - Colorado Springs, CO - (Open Rank)
Colorado Springs, Colorado, United States
OnsiteFull Time
5+ YOEExperience with Python, relational databases, web APIs, LLM integration, data pipelines, ML frameworks (PyTorch/TensorFlow/Scikit-learn/NumPy), and Git; U.S. citizenship and ability to obtain security clearance required; advanced degree/experience combinations preferred.
Python, PostgreSQL, MySQL, REST, GraphQL, PyTorch, TensorFlow, Scikit-learn, NumPy, Git, NVIDIA Omniverse, Isaac Sim, Unified Data Library (UDL), Model Context Protocol, LangChain, LlamaIndex, Platform One, AWS GovCloud, Azure Government, RDF, OWL, SPARQL, Docker, Kubernetes
1w
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Infoblox Systems Engineer - Active TS/SCI with CI Poly
Sterling or Annapolis Junction or Colorado Springs
OnsiteFull Time
12+ YOECDCA certification, Active TS/SCI clearance, extensive enterprise DNS/DDI experience, strong DNS/DHCP/IPAM/BIND/NTP knowledge, Python and API experience, bachelor's in IT or 12+ years' IT experience, strong troubleshooting and communication skills.
Infoblox, DNS, DHCP, IPAM, BIND, NTP, Python, APIs
1w
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Solutions Engineer
Denver or Dallas or Boulder or Little Rock or Colorado Springs
$209k-$275k/yr RemoteFull Time
5+ YOE5+ years in service provider networks with optical/transport and routing expertise; knowledge of Cisco platforms, networking protocols, automation, and strong communication skills.
NCS1k, NCS2k, IOS XR, BGP, EVPN, OSPF, IS-IS, MPLS-LDP, SR-MPLS, SRv6, AWS, GCP, Azure, Terraform, Splunk, APIs